On Sat, 14 Feb 2015 21:29:27 +0000, Tim Watts wrote:

On 14/02/15 18:20, charles wrote:
In article , Mark Carver
wrote:
On 14/02/2015 17:38, charles wrote:
In article ,
wrote:
On Saturday, 14 February 2015 16:38:04 UTC, Kevin wrote:
I see that many suppliers now offer both SP and DP versions of
switched sockets, with DP up to 50% dearer for a given make. What
governs which version one should use?

You can't use a switched one of any variety for supplying a boiler.

I don't, having made my own decision 26 years ago. Is it now in the
regs?

What's the logic behind that directive ?

my logic was that removing power to the system, which includes the
pump, could result in overheating of the boiler and a consequent shut
down, so that when power was restored the boiler wouldn't restart. This
could, if I wasn't at home, result in expensive call out charges.


In fact that makes no sense at all - I've seen boilers with switched
FCUs feeding them.

Indeed. I have one, and I fitted it.



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